Universal Voice Activated Remote Control (UVARC)

1
Universal Voice Activated Remote Control(UVARC)

• Thanh Phan
• Dat Le
• Mohammad Safaiezeab
• Brandon Wilgor
• Peter Ralston

2
Project Overview

• Uses Voice Recognition Stamp Board to receive
  commands
• Analyzes the input command and compares to
  wordbank
• Determines remote control task corresponding to
  wordbank command
• Sends code to an external microcontroller
• Transmits IR signal to the televisions receiver

3
VR Stamp Module
Source Sensory Inc. VR Stamp Datasheet
4
VR Microcontroller
RSC4128
Source Sensory Inc. RSC4128 Datasheet
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IR Signal Standard

• Uses RC5 Frame Format
• Bit patterns interpreted by Bi-phase coding

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Modulating the RC5 Square Wave

• Signal is modulated at a specific frequency by
  the IR transmitter
• IR receiver demodulate the signal back into
  square wave
• Noise is rejected by this process

source RC5 Application Note
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IR Signal Interpretation
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Function Bit Patterns
  Start Start Control Address Code Address Code Address Code Address Code Address Code Command Command Command Command Command Command
Power On 1 1 1 0 0 0 0 0 0 0 1 1 0 0
Button 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1
Button 2 1 1 0 0 0 0 0 0 0 0 0 0 1 0
Button 3 1 1 1 0 0 0 0 0 0 0 0 0 1 1
Button 4 1 1 0 0 0 0 0 0 0 0 0 1 0 0
Button 5 1 1 1 0 0 0 0 0 0 0 0 1 0 1
Button 6 1 1 0 0 0 0 0 0 0 0 0 1 1 0
Button 7 1 1 1 0 0 0 0 0 0 0 0 1 1 1
Button 8 1 1 0 0 0 0 0 0 0 0 1 0 0 0
Button 9 1 1 1 0 0 0 0 0 0 0 1 0 0 1
Button 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
Volume Up 1 1 1 0 0 0 0 0 0 1 0 0 0 0
Volume Down 1 1 1 0 0 0 0 0 0 1 0 0 0 1
Channel Up 1 1 0 0 0 0 0 0 1 0 0 0 0 0
Channel Down 1 1 1 0 0 0 0 0 1 0 0 0 0 1
Repeat 1 1 0 0 0 0 0 0 1 0 0 0 1 0
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Coding Implementation

• Create C Base Library
• Dynamic Coding Libraries
• Code encryption compatible with RCS4128
• Data algorithmic of 25 word functionalities
• Runtime or Offline Recognition Set Creation

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Coding Algorithm